scholarly journals Rotation Behaviour of Pedestrians in Bidirectional and Crossing Flows

2020 ◽  
pp. 249-255
Author(s):  
Martijn Sparnaaij ◽  
Dorine C. Duives ◽  
Serge P. Hoogendoorn
Keyword(s):  
Rotation Behaviour

Moment–rotation behaviour of non-bolted planar joints for segmental tunnels

2019 ◽  
Vol 172 (10) ◽  
pp. 749-767 ◽  
Author(s):  
Fernando Peña ◽  
Arturo Galván ◽  
Jatziri Y. Moreno-Martínez ◽  
Israel E. Herrera-Díaz
Keyword(s):  
Rotation Behaviour

The rotational behaviour of clipped end plate connections

1988 ◽  
Vol 15 (1) ◽  
pp. 117-126 ◽  
Author(s):  
Karl Van Dalen ◽  
John MacIntyre
Keyword(s):  
Rotational Behaviour ◽  
Limit States ◽  
Modified Model ◽  
End Plate ◽  
Rotation Capacity ◽  
Plate Connections ◽  
The Moment ◽  
Rotation Behaviour ◽  
Key Words Beams ◽  
Good Agreement

The rotational behaviour of clipped end plate connections was studied by subjecting nine clipped and three conventional or “unclipped” specimens with varying connection geometry to combined shear and moment and obtaining the corresponding moment–rotation characteristics. It was found that the clipped end plate connections in this investigation had more than adequate rotation capacity to permit an interior beam connected to a supporting member by this type of connection to achieve its full plastic moment, provided the length-to-depth ratio of the beam does not exceed 20. For the range of rotations that would be experienced by clipped end plate connections in a practical structure, a model originally developed to predict the moment–rotation behaviour of conventional shear end plate connections was modified so as to be applicable to clipped end plate connections. Good agreement was obtained between the test values and those predicted by the modified model. No adverse effect on the rotational behaviour of the connections was observed to result from the asymmetry caused by clipping the end plate. Key words: beams, bolts, columns, connections, fillet welds, limit states design, moment, rotation, shear tests, steel construction.

Evaluation of Rotation Capacity of RHS Aluminium Alloy Beams by FEM Simulation: Temper T4

2016 ◽  
Vol 710 ◽  
pp. 288-294 ◽  
Author(s):  
Paolo Castaldo ◽  
Elide Nastri ◽  
Vincenzo Piluso
Keyword(s):  
Aluminium Alloy ◽  
Shape Factor ◽  
Fem Simulation ◽  
Constitutive Law ◽  
Buckling Strength ◽  
Rotation Capacity ◽  
Numerical Assessment ◽  
Moment Gradient ◽  
The Moment ◽  
Rotation Behaviour

The aim of this work consists in the numerical assessment of the moment-rotation behaviour of RHS aluminium alloy beams subjected to non-uniform bending through an extensive parametric analysis performed by means of FE code ABAQUS investigating the influence of the main geometrical and mechanical parameters. In particular, the influence of the flange slenderness, web stiffness and moment gradient are investigated by adopting the constitutive law proposed by Eurocode 9 based on the Ramberg-Osgood model whose shape factor characterise the hardening behaviour of the material. The investigations concern these factors considered separately as well as their interaction. The results are herein reported with reference to temper T4 and show the importance of some of the investigated parameters on both buckling strength and rotation capacity of aluminium alloy beams.

Coupler rotation behaviour and its effect on heavy haul trains

2013 ◽  
Vol 51 (12) ◽  
pp. 1818-1838 ◽  
Author(s):  
Z.Q. Xu ◽  
W.H. Ma ◽  
Q. Wu ◽  
S.H. Luo
Keyword(s):  
Heavy Haul ◽  
Heavy Haul Trains ◽  
Rotation Behaviour

The effects of partial carpal fusions on wrist range of motion

2015 ◽  
Vol 41 (5) ◽  
pp. 479-483 ◽  
Author(s):  
C. Got ◽  
B. G. Vopat ◽  
P. K. Mansuripur ◽  
P. M. Kane ◽  
A. P. C. Weiss ◽  
...  
Keyword(s):  
Range Of Motion ◽  
Normal Range ◽  
Level Of Evidence ◽  
Fusion Construct ◽  
Wrist Motion ◽  
Bone Fusion ◽  
Radial Deviation ◽  
Pure Extension ◽  
The Moment ◽  
Rotation Behaviour

The objective of this investigation was to evaluate the effects of different partial wrist fusions on wrist motion. A total of 20 cadaveric wrists were tested in the intact state and after undergoing either a four-corner fusion or 2- and 3-bone fusion. The moment-rotation behaviour was measured in 24 directions of wrist motion about the forearm axis. The 2- and 3-bone fusion groups demonstrated increased radial deviation and pure flexion. Pure flexion was decreased in the four-corner fusion group. Radial extension and pure extension were decreased in all treatments compared with normal range of motion. Increasing the number of carpal bones within the fusion construct did not alter the functional axis of the wrist. Essentially equivalent motion is possible with 2-bone, 3-bone and four-corner fusions, with the exceptions of pure flexion and radial deviation. This data may influence surgeons when choosing between treatment methods. Level of evidence: N/A

scholarly journals Experimental observation of permanent magnet rotation

2021 ◽  
Author(s):  
Weiming Tong ◽  
Bihe Chen
Keyword(s):  
Magnetic Field ◽  
Permanent Magnet ◽  
Hollow Sphere ◽  
Experimental Methods ◽  
The Sun ◽  
Rotational Force ◽  
The Earth ◽  
The Relationship ◽  
The Magnetic Field ◽  
Rotation Behaviour

Abstract Why does the Earth rotate? At present, several theories on Earth rotation remain hypotheses. Hence, the aim of this study was to obtain experimental evidence of the relationship between the rotational force and magnetic field so that we can use experimental devices to demonstrate the rotation relationship among the planets and the sun. Each permanent magnet rotating under the action of an external force is installed on the shaft of DC motor; each magnetic ball designed to rotate in a magnetic field is placed in the center of a hollow sphere that can float on the water. Using the above setup, the experimental methods and procedures based on this research can be used to observe the rotation behaviour of a permanent magnet in a magnetic field, understand the reason for its rotation, and determine the strength of the rotational force of the permanent magnet in the magnetic field.

CYCLIC AND MONOTONIC MOMENT-ROTATION BEHAVIOUR OF CFS WEB-CONNECTED BEAM-TO-COLUMN JOINTS

2021 ◽  
Author(s):  
Ioannis Papargyriou ◽  
Seyed Mohammad Mojtabaei ◽  
Iman Hajirasouliha ◽  
Jurgen Becque
Keyword(s):  
Rotation Behaviour
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